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Re: powerpc64 libstdc++

From: Alan Modra <amodra at bigpond dot net dot au>
To: David Edelsohn <dje at watson dot ibm dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Sun, 28 Jul 2002 09:30:14 +0930
Subject: Re: powerpc64 libstdc++
References: <20020727084555.GU26054@bubble.sa.bigpond.net.au> <200207272014.QAA31472@makai.watson.ibm.com>

On Sat, Jul 27, 2002 at 04:14:24PM -0400, David Edelsohn wrote:
> libstdc++-v3/ChangeLog
> 	* configure.target (cpu_include_dir): Use cpu/powerpc for powerpc64.
> 	* config/cpu/powerpc/atomicity.h (__always_swap): Remove.
> 	(__test_and_set): Remove.
> 
> Expanding the target to cover powerpc64 is fine.
> 
> I'm not sure why it's worth removing the other atomic ops now that they
> are there.  I thought part of the reason they were present is because of
> glibc, which shares/shared libio code with libstdc++.

I should have mentioned that I checked current glibc sources too.  It's
wrong to leave these functions in without some changes as they operate
on "long", yet use "lwarx" and "stwcx.".

-- 
Alan Modra
IBM OzLabs - Linux Technology Centre

Follow-Ups:
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References:
- powerpc64 libstdc++
  - From: Alan Modra
- Re: powerpc64 libstdc++
  - From: David Edelsohn

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